# Alien Planets vs Astris

The clearest difference is price: Astris at Free against Alien Planets's $9.99. Astris also leads on update cadence (every 3 months vs every 27 months) and iOS requirement (15.0 vs 18.2). On ads, in-app purchases and device support there is nothing between them.

Astris is free to download; Alien Planets costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Alien Planets ships an update every 27 months, Astris every 3 months. Both last shipped on September 27, 2026.

## The numbers

| Metric | Alien Planets | Astris |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 3 months** |
| Size | 34 MB | 21 MB |
| Requires iOS | 18.2 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jose Leal](https://appshunter.io/developer/1441468562) | [ISTITUTI EDMONDO DE AMICIS SRL](https://appshunter.io/developer/1219261025) |

## What reviewers say

### Alien Planets

[App page](https://appshunter.io/ios/app/alien-planets/id1478121868)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Astris

[App page](https://appshunter.io/ios/app/astris/id6454899891)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Alien Planets free?

Alien Planets costs $9.99, with no in-app purchases.

### Is Astris free?

Astris is free to download, with no in-app purchases.

### Do Alien Planets or Astris have ads?

Neither Alien Planets nor Astris shows ads.

### Which is updated more often, Alien Planets or Astris?

Alien Planets ships an update every 27 months, and Astris every 3 months. Most recently, Alien Planets was updated on September 27, 2026 and Astris on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*